Automatic device for controlling the speed of trains.



L. W. HORNE L W. N. CRANE. Auommm DEvmE Fon coNmoLLmG THE SPEED or mms.

APPLICATION FILED SEPT.4, 1913.

Patented Dec. I4, 1.915.

umn KEI/17 I (S L/5 *(/0 Fif/.jl

il l? es? the mile as Well eert Homme e citizen eff the Uniteel States, uml

of llilei'iiieteii, city, eeimtyi mel @wie of useful mpreveiieiiie iii riir'gemebie Devices for lleilsrelliiigg the Speed; of Treme, ei: which alle ellewing; e epeeii'iciriei'e This; fl 'vice imei. invenieri relzi'see @Je eerlzien (il a. leipiifn. speeel controlling appareiii-is` shell remain @niet ofi enti permerieri'ly eee red ie elle rails end. reeflbecl.

in eelieatieii filed by ue emi. bearing cleie ef 'eli 1913, ierisil No. 738,06?, We lime fully set forlgli lle speed controlling meelmi'iienie hat filiali be eerrieil by leeeme'Hivea and my reference l-lierelie 'in Mhiie epplieatieu is merely ier the purpose ei' e more complete unilersaneiiig' ei' ehe whole iirweiitien, its operation, iunetioiie, smal eil- 1 .iis eppleirgieii will describe 'the eleeirimeek eireiiits enel ell changes iChat may lee 'necessary er desirable in the eenetiuctien i meelmnieal sind electricas-.l ipplie.iieee5 that We have found expeei iii; to :rbmeli te Cei-tuin mile t0 aecorei. ce1., useful reeul'e, lie i'ellewliig ie wlmi: we eeneider the liest niemals of carrying; eul, this. invenlbieri and the aeeempanying drawings 'form a peri; eli this sieeii'leeien, m which;

i ige-:e lf'is e, Cliegrzim of simple track (.:ireue Q, sliews en i large Seele, e eliert seeiie'n of diwmegiietie rail., previiled with mi eleetre-megnetie flew/jee. 3, is e seeiieii lireugli i rail ei l eppreximeti-ily en line in l? ligure shows im. elevelieri purify in eee'ien, "the means im? eempleting e magrieiie circuit 'in e diemiegneie seefrma l Similar reference ziuiiierele indicate like parte in all *elle figures where they appear.

ln our device we uiliee mi inverted U shape .megne as indicated :it 2. lfiiie meg nei supported upon Seem 3, miel ie eer- -i'iecl by leeeiizetive er trein and in suoli e pesilieii that il; will lee euepeiiaie. ,ever ene ei' tlie mening' 'fraile :mel eul'ieieitly' elese thereto ige beheld :lewnweril e its: 'fuileeli extent by like. iniluefiee el' @Elie margriet 'repen like rail. lin. this iii'veirlieei, We ufilize eiiliw ation filed fi-, w13.

nary Sfeel mile in that peiieri el elle tradi', where we desire the muguet slieulcl be 1re-- keine/(l dimmi-but as our device in its operefion requires that the magnetic circuit slieulel be breken, se elim; ille magnet may be more er less readily lifted, We interpese el; p'iedeteinii'iefl poiir'as, sections edi diemen@ meile or non-magnetic rail. The glie-me@ matie mile may be Similar me elle ordinary eieel re'ii; wieh the exception the?, they eet@ eiii eerein preperrieiie el? iieii-iimgnelie memls, e0 es te make ille eeetien lmfi il'iey' Span imn-attreeive "Le the magnet ll. .in em: experimente, We lieve used e manganese mil :for lie flie--nmgnetie section. illieugli 'we eee ne reason why any noneniagnetie rail el; suliicient strengl, should nel: be used.

At li, iii Fig. l., We Sliew an ordinary eleel To complee lie circuit, the magnets el? ezicl'r manganese Section are electrically secured. te the eppesi'te rail lr6, which may be ein 0rflinary steel rail.

is intimated., il; is desi able that lie merigeneee sections should under eertfiiii eei'ielitiene Mimet er be retracted by, 'lle iiiegiies, and to obtain 'this desirable reeult, We shew iii Fig'. E9 und en :i larger seele :i porieii ef lzlie section 5. We have arranged seit ireli plaies er combs l2 and .1.3, one up'en eifle ef the dia-megiieeie fail taking `eure the eetli 01E one eljtlie combs, will be slmrtene "er arranged in'seme e'her meneerl e0 time they will nel; "interfere with *elle liaiige ef e Wheel 'riiimiiiig upon 'the These platee er combs l'eilcl 13,-are eeeuretl ene te each end of fi coil 147 en@ when Elie 'eoil i4.- is energized tlieplaies 12 and 13 l1ecome lie poles of a Very eliieient electromegiiet. Vlie luv-,fe considered. it adyiszrble, te place .fi number ei these weile edjaeent to each' ia-iiiegnetie rail. eeee to assure @he meiiilgeiiiing of ein e'ieient magneaie circuit in the gire'xim'iy ef iliefmegnetie mil when .it is requiieel.. r

" lll; will be readily umlereleed that when vals, will have no eli'ect upon. a train,

electrically secured, are short circuited, no current will pass through the4 coils la. Therefore a train or locomotive carrying a magnet 2, .will have its magnet held down, .while passing overan ordinary steel rail.

pon approaching a manganese or diaanagnetic section, which .is temporarily out of circuit with the batter;T 9, the magnet 2 may be lifted by any desirable means, but when another section of steel rail reached, the magnet will again he attractive and held down until another dia-magnetic section, again interrupts the magnetic circuit. Villien however the battery 9 is not short circuited, its currentv will be tree to pass through the coils 14, energizing the plates or combs l2 and 13, holding the magnet down, even when passing an otherwise dia-magnetic section.

It will be noted that the dia-magnetic sections 5 and 6 which We may sometimes reifer to as the distant signal sections are at greater distance from each other, than the sections 7 and. 8, which constitute what we'may sometimes term the home-signal sections. This is desirable for it is by this means that We obtain speed control. When the section o a road immediately ahead of the one approached by a train is occupied by another train or by any other device that will short circuit the battery 9 contained therein, We desireA that the rearmost train shall have its speed reduced and shall be stopped before it can enter the section or block occupied by another train. Should the engineer' or operator fail to observe the signals usually displayed, our device will control the speed of the train. lt will not be found desirable to immediately stop the train, but its speed should be reduced Within certain safe limits, and as we have arranged that it will require more than one interruption of the magnetic circuit to stop a train, and as We have arranged so that a series of such interruptions occurring at certain interwe space the distance signaldia-niagnetic section sutileiently far apart so that they will not effect the 'train unless "it be traveling at a high rate of speed. Vire gradually shorten the distance between the diamagnetic sections making` 'those at the home signal so short, that; a trairrcannot pass them even at a particularly low speed while the block ahead is occupied by a train. Here we have shown but two series of ing the distant andhome signal, but we desire it understood that We may use one or more seriesof dia-magnetic sections either stopping the train immediately that a deenergized dia-magnetic section is reached, or by the use cfa number of sections spaced varying distances apart, continually reduce the speed of the train until the last section is reached, which will completely stop the train. It will be understood that when the yeen dia-magnetic sections form! increase block immediately ahead ot a train is not occupied, the dia-magnetic sections will be magnetic hy the completion of the battery circuit through the electro-magnets l-l, and the speed of the running train will not he aiiected.

lt is obvious that modifications may he made within the scope of the appended claims without departing from thc principle or sacriiicing the adyantagcs oi? this invcntion.` lVe may employ a greater or fewer number of magnet coils than here shown or we may increase or (.lecrease the capacity oi. cach coil. For the salie of convenience, we have shown a closed circuit battery between the rails oi a block section, but we desire it to be understood that a relay or other device conformingr to standard signal practice may housed to open the circuit and that the energy furnished to the clectromagnets contained .in a dia-'magnetic section may be supplied by means ot' ay line wire vconnected to any source of electric power.

Although we have shown a comb 4, and a. plurality of clcctroniagncts lor establishing a magnetic circi'iit adjacent to the dia-magnetic or non-magnetic rail sections, we dcsire it understood that any other method for establishing` this nngnctic circuit may be utilized.

Having carefully and l'ully described our invention what we claim and desire to secure byLetters Patent isc 1. i. device for controlling the spced of trains which consists of a track comprising magnetic and dia-magnetic rails and stationary means for establishing a magnetic adjacent to said dia-magnetic rail for the purpose set forth.

A device of the character described having a non-magnetic rail, a plurality of magnet coils arranged adjacentv thereto, and means for establishing and interrupting :1y circuit through said coils for the purpose set forth.

3. A device of the character described having ordinary rails, dia-magnetic rails interposed, and spaced apart and means for completing a. magnetic field around said lia-magnetic rails for the purpose set forth.

Ll-. A deviceof the character described having in combination with a track divided into sections, non-magnetic rails inserted in one said section, magnetic devices arranged adjacent to said non-magnetic rails, and a source ot current supply, said magnetic devices and current supply heilig in closed circuit with a second section, said magnetic devices 'being adapted to be denergized by the short circuiting of the said second section for the purpose set forth.

5. A device of the character described comprising a track, having magnetic and non-magnetic sections, magnet coils arranged adjacent to said non-magnetic sections, plates extending upward from said coils, and adapted to be included in the magnetic field thereof, and a dependingV trains having in combination with a magnet, a'track having magnetic sections, and

dia-magnetic sections interposed at predetermined distances apart,` said dia-magnetic sections being arranged in pairs, the spacing-- between each pair being shorter or longer 1b than that of other pairs as herein specified and for the purpose set forth.

Signed at the city of New York, county of New \York, and4 State of New York this 29th dayof August 1913.

LAWRENCE WESLEY HoR'NE. WARREN NoRLE CRANE.

Witnesses:

G. E. STERRErrE, ARTHUR PHELPS MARR. 

